Sin2-30o - 4 cot2-45o - sec2-60o - - a 0 b 1-2 c 4 d 1

Sin^2 30^o + 4 cot^2 45^o sec^2 60^o =1/4 + 4 × 1 2 × 2 =1/4 ...

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Standard Values of Trigonometric Ratios

sin2 30o + 4 ...

Question

$s i n^{2} 30^{o}$ + 4 $c o t^{2} 45^{o}$ - $s e c^{2} 60^{o}$ = ?

(a) 0 (b) $\frac{1}{2}$ (c) 4 (d) 1

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Solution

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